/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.nacos.config.server.utils;

import javax.annotation.PostConstruct;

import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;

/**
 * properties utils
 * 
 * @author Nacos
 *
 */
@Component
public class PropertyUtil {

	private final static Logger logger = LogUtil.defaultLog;
	
	private static int notifyConnectTimeout = 100;
	private static int notifySocketTimeout = 200;
	private static int maxHealthCheckFailCount = 12;
	private static boolean isHealthCheck = true;
	private static int maxContent = 10 * 1024 * 1024;

	/**
	 * 是否开启容量管理
	 */
	private static boolean isManageCapacity = true;
	/**
	 * 是否开启容量管理的限制检验功能，包括配置个数上限、配置内容大小限制等
	 */
	private static boolean isCapacityLimitCheck = false;
	/**
	 * 集群默认容量上限
	 */
	private static int defaultClusterQuota = 100000;
	/**
	 * 每个Group默认容量上限
	 */
	private static int defaultGroupQuota = 200;
	/**
	 * 每个Tenant默认容量上限
	 */
	private static int defaultTenantQuota = 200;
	/**
	 * 单个配置中content的最大大小，单位为字节
	 */
	private static int defaultMaxSize = 100 * 1024;
	/**
	 * 聚合数据子配置最大个数
	 */
	private static int defaultMaxAggrCount = 10000;
	/**
	 * 聚合数据单个子配置中content的最大大小，单位为字节
	 */
	private static int defaultMaxAggrSize = 1024;
	/**
	 * 初始化容量信息记录时，发现已经到达限额时的扩容百分比
	 */
	private static int initialExpansionPercent = 100;
	/**
	 * 修正容量信息表使用量（usage）的时间间隔，单位为秒
	 */
	private static int correctUsageDelay = 10 * 60;

	private static boolean standaloneMode = false;

	@Autowired
	private Environment env;

	static {
		setStandaloneMode(Boolean.parseBoolean(System.getProperty("nacos.standalone", "false")));
	}

	@PostConstruct
	public void init() {
		try {

			setNotifyConnectTimeout(Integer.parseInt(env.getProperty("notifyConnectTimeout", "100")));
			logger.info("notifyConnectTimeout:{}", notifyConnectTimeout);
			setNotifySocketTimeout(Integer.parseInt(env.getProperty("notifySocketTimeout", "200")));
			logger.info("notifySocketTimeout:{}", notifySocketTimeout);
			setHealthCheck(Boolean.valueOf(env.getProperty("isHealthCheck", "true")));
			logger.info("isHealthCheck:{}", isHealthCheck);
			setMaxHealthCheckFailCount(Integer.parseInt(env.getProperty("maxHealthCheckFailCount", "12")));
			logger.info("maxHealthCheckFailCount:{}", maxHealthCheckFailCount);
			setMaxContent(Integer.parseInt(env.getProperty("maxContent", String.valueOf(maxContent))));
			logger.info("maxContent:{}", maxContent);
			// 容量管理
			setManageCapacity(getBoolean("isManageCapacity", isManageCapacity));
			setCapacityLimitCheck(getBoolean("isCapacityLimitCheck", isCapacityLimitCheck));
			setDefaultClusterQuota(getInt("defaultClusterQuota", defaultClusterQuota));
			setDefaultGroupQuota(getInt("defaultGroupQuota", defaultGroupQuota));
			setDefaultTenantQuota(getInt("defaultTenantQuota", defaultTenantQuota));
			setDefaultMaxSize(getInt("defaultMaxSize", defaultMaxSize));
			setDefaultMaxAggrCount(getInt("defaultMaxAggrCount", defaultMaxAggrCount));
			setDefaultMaxAggrSize(getInt("defaultMaxAggrSize", defaultMaxAggrSize));
			setCorrectUsageDelay(getInt("correctUsageDelay", correctUsageDelay));
			setInitialExpansionPercent(getInt("initialExpansionPercent", initialExpansionPercent));
			
		} catch (Exception e) {
			logger.error("read application.properties failed", e);
		}
	}

	public static int getNotifyConnectTimeout() {
		return notifyConnectTimeout;
	}

	public static int getNotifySocketTimeout() {
		return notifySocketTimeout;
	}

	public static int getMaxHealthCheckFailCount() {
		return maxHealthCheckFailCount;
	}

	public static boolean isHealthCheck() {
		return isHealthCheck;
	}

	private boolean getBoolean(String key, boolean defaultValue) {
		return Boolean.valueOf(getString(key, String.valueOf(defaultValue)));
	}

	private int getInt(String key, int defaultValue) {
		return Integer.parseInt(getString(key, String.valueOf(defaultValue)));
	}

	private String getString(String key, String defaultValue) {
		String value = env.getProperty(key);
		if (value == null) {
			return defaultValue;
		}
		logger.info("{}:{}", key, value);
		return value;
	}

	public String getProperty(String key) {
		return env.getProperty(key);
	}

	public String getProperty(String key, String defaultValue) {
		return env.getProperty(key, defaultValue);
	}

	public static int getMaxContent() {
		return maxContent;
	}

	public static boolean isManageCapacity() {
		return isManageCapacity;
	}

	public static int getDefaultClusterQuota() {
		return defaultClusterQuota;
	}

	public static boolean isCapacityLimitCheck() {
		return isCapacityLimitCheck;
	}

	public static int getDefaultGroupQuota() {
		return defaultGroupQuota;
	}

	public static int getDefaultTenantQuota() {
		return defaultTenantQuota;
	}

	public static int getInitialExpansionPercent() {
		return initialExpansionPercent;
	}

	public static int getDefaultMaxSize() {
		return defaultMaxSize;
	}

	public static int getDefaultMaxAggrCount() {
		return defaultMaxAggrCount;
	}

	public static int getDefaultMaxAggrSize() {
		return defaultMaxAggrSize;
	}

	public static int getCorrectUsageDelay() {
		return correctUsageDelay;
	}

	public static boolean isStandaloneMode() {
		return standaloneMode;
	}

	public static void setStandaloneMode(boolean standaloneMode) {
		PropertyUtil.standaloneMode = standaloneMode;
	}

	public static void setNotifyConnectTimeout(int notifyConnectTimeout) {
		PropertyUtil.notifyConnectTimeout = notifyConnectTimeout;
	}

	public static void setNotifySocketTimeout(int notifySocketTimeout) {
		PropertyUtil.notifySocketTimeout = notifySocketTimeout;
	}

	public static void setMaxHealthCheckFailCount(int maxHealthCheckFailCount) {
		PropertyUtil.maxHealthCheckFailCount = maxHealthCheckFailCount;
	}

	public static void setHealthCheck(boolean isHealthCheck) {
		PropertyUtil.isHealthCheck = isHealthCheck;
	}

	public static void setMaxContent(int maxContent) {
		PropertyUtil.maxContent = maxContent;
	}

	public static void setManageCapacity(boolean isManageCapacity) {
		PropertyUtil.isManageCapacity = isManageCapacity;
	}

	public static void setCapacityLimitCheck(boolean isCapacityLimitCheck) {
		PropertyUtil.isCapacityLimitCheck = isCapacityLimitCheck;
	}

	public static void setDefaultClusterQuota(int defaultClusterQuota) {
		PropertyUtil.defaultClusterQuota = defaultClusterQuota;
	}

	public static void setDefaultGroupQuota(int defaultGroupQuota) {
		PropertyUtil.defaultGroupQuota = defaultGroupQuota;
	}

	public static void setDefaultTenantQuota(int defaultTenantQuota) {
		PropertyUtil.defaultTenantQuota = defaultTenantQuota;
	}

	public static void setDefaultMaxSize(int defaultMaxSize) {
		PropertyUtil.defaultMaxSize = defaultMaxSize;
	}

	public static void setDefaultMaxAggrCount(int defaultMaxAggrCount) {
		PropertyUtil.defaultMaxAggrCount = defaultMaxAggrCount;
	}

	public static void setDefaultMaxAggrSize(int defaultMaxAggrSize) {
		PropertyUtil.defaultMaxAggrSize = defaultMaxAggrSize;
	}

	public static void setInitialExpansionPercent(int initialExpansionPercent) {
		PropertyUtil.initialExpansionPercent = initialExpansionPercent;
	}

	public static void setCorrectUsageDelay(int correctUsageDelay) {
		PropertyUtil.correctUsageDelay = correctUsageDelay;
	}
	
}
